Look at this and go search for "./log.MYI". See how full it is? Hell, I'll paste the relevant table:
./log.MYI MyISAM file: ./log.MYI Record format: Fixed length Character set: latin1 (8) File-version: 1 Creation time: 2000-11-09 16:49:15 Recover time: 2001-03-25 22:27:09 Status: open,changed Auto increment key: 1 Last value: 2529102 Data records: 2377474 Deleted blocks: 0 Datafile parts: 2377474 Deleted data: 0 Datafile pointer (bytes): 4 Keyfile pointer (bytes): 2 Datafile length: 97476434 Keyfile length: 57940992 Max datafile length: 176093659134 Max keyfile length: 67107839 Recordlength: 41 table description: Key Start Len Index Type Rec/key Root Blocksize 1 26 4 unique unsigned long 1 19351552 1024 2 38 2 multip. short prefix 44834 24294400 1024 40 1 int8 8367 41 1 int8 950 3 2 4 multip. unsigned long prefix 39 35307520 1024 38 2 short 31 40 1 int8 16 41 1 int8 2 4 10 8 multip. ulonglong prefix NULL 5 43405312 1024 5 18 8 multip. ulonglong prefix NULL 1 57480192 1024
I think when I did a repair table on it (even though it reported no errors), it changed something (because it works now), and updated the "Recover time"